11103221320021 has 4 divisors (see below), whose sum is σ = 11104847695872. Its totient is φ = 11101594944172.

The previous prime is 11103221320013. The next prime is 11103221320091. The reversal of 11103221320021 is 12002312230111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11103221320021 - 2³ = 11103221320013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11103221320091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813177685 + ... + 813191338.

It is an arithmetic number, because the mean of its divisors is an integer number (2776211923968).

Almost surely, 2^{11103221320021} is an apocalyptic number.

It is an amenable number.

11103221320021 is a deficient number, since it is larger than the sum of its proper divisors (1626375851).

11103221320021 is an equidigital number, since it uses as much as digits as its factorization.

11103221320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626375850.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11103221320021 its reverse (12002312230111), we get a palindrome (23105533550132).

The spelling of 11103221320021 in words is "eleven trillion, one hundred three billion, two hundred twenty-one million, three hundred twenty thousand, twenty-one".